Math Mansion – Prime Numbers

EQ: How do you identify numbers as prime or composite? Prime number Example A number with EXACTLY 2 factors 3, 7, 51, 47, 23

EQ: How do you identify numbers as prime or composite? Composite number Example A number with MORE than 2 factors 4, 8, 25, 100, 157

EQ: How do you identify numbers as prime or composite? Find factors with the multiplication chart. Step 1 Step 2 Steps to success Circle the target number Trace it back

EQ: How do you identify numbers as prime or composite? Finding factors using the calculator Step 1 Step 2 Steps to success Enter the target number Divide by your choices, each time there is no decimal it is a factor

EQ: How do you identify numbers as prime or composite? Example 100 Enter 100 divided by 2 Enter 100 divided by 3 Enter 100 divided by 4 Enter 100 divided by 5 Enter 100 divided by 6 Enter 100 divided by 7 Etc…..

Your turn Given a number, you must decide if it is prime or composite Tell your neighbor why your number is prime or composite Post your number on the correct side of the board.